From 232ec653ee8c4595aea674ee2bc8945cc1e60914 Mon Sep 17 00:00:00 2001
From: Frederik Rietdijk <fridh@fridh.nl>
Date: Sun, 31 Dec 2017 12:02:35 +0100
Subject: [PATCH] python.pkgs.backports_abc: move expression

---
 .../python-modules/backports_abc/default.nix  | 25 +++++++++++++++++++
 pkgs/top-level/python-packages.nix            | 20 +--------------
 2 files changed, 26 insertions(+), 19 deletions(-)
 create mode 100644 pkgs/development/python-modules/backports_abc/default.nix

diff --git a/pkgs/development/python-modules/backports_abc/default.nix b/pkgs/development/python-modules/backports_abc/default.nix
new file mode 100644
index 000000000000..091312f55dcb
--- /dev/null
+++ b/pkgs/development/python-modules/backports_abc/default.nix
@@ -0,0 +1,25 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, python
+}:
+
+buildPythonPackage rec {
+  pname = "backports_abc";
+  version = "0.4";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "8b3e4092ba3d541c7a2f9b7d0d9c0275b21c6a01c53a61c731eba6686939d0a5";
+  };
+
+  checkPhase = ''
+    ${python.interpreter} -m unittest discover
+  '';
+
+  meta = {
+    homepage = https://github.com/cython/backports_abc;
+    license = lib.licenses.psfl;
+    description = "A backport of recent additions to the 'collections.abc' module";
+  };
+}
\ No newline at end of file
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index f169b0f2703a..7c9d423070c5 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1003,25 +1003,7 @@ in {
     };
   };
 
-  backports_abc = buildPythonPackage rec {
-    name = "backports_abc-${version}";
-    version = "0.4";
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/b/backports_abc/${name}.tar.gz";
-      sha256 = "8b3e4092ba3d541c7a2f9b7d0d9c0275b21c6a01c53a61c731eba6686939d0a5";
-    };
-
-    checkPhase = ''
-      ${python.interpreter} -m unittest discover
-    '';
-
-    meta = {
-      homepage = https://github.com/cython/backports_abc;
-      license = licenses.psfl;
-      description = "A backport of recent additions to the 'collections.abc' module";
-    };
-  };
+  backports_abc = callPackage ../development/python-modules/backports_abc { };
 
   backports_functools_lru_cache = callPackage ../development/python-modules/backports_functools_lru_cache { };